A conformational heparan sulfate binding site essential to infectivity overlaps with the conserved hepatitis B virus A‐determinant
Camille Sureau, Jessica Salisse – 13 November 2012 – Two determinants of infectivity have been identified in the hepatitis B virus (HBV) envelope proteins: a pre‐S1 receptor‐binding site and an uncharacterized determinant in the antigenic loop (AGL), which is structurally related to the antigenic a‐determinant. Infection would proceed through virus attachment to cell surface heparan sulfate (HS) proteoglycans (HSPGs) before pre‐S1 engages a specific receptor for uptake.